What is the easier way of listing several symbolic variables?

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Del
Del 2013-1-28
is there a way to list symbolic variables without having to type each one of them? I mean, sometimes I am dealing with several variables, say x1,x2,....,x20; so what would be the 'easiest' way of writing them?
Would
syms x1... x20
work ? (or something similar) ?

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回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2013-1-28
编辑：Azzi Abdelmalek 2013-1-28
for k=1:20;
syms(sprintf('x%d',k));
end
Sean de Wolski
Sean de Wolski 2013-1-28
for ii = 1:20;
syms(['x' num2str(ii)]);
end
But more importantly, can you represent it as one 1x20 vector instead?
  2 个评论
Del
Del 2013-1-28
Thanks! Not really...
could you enlighten me on how to do this?
Sean de Wolski
Sean de Wolski 2013-1-28
x = sym(zeros(1,20))
Now fill them in with whatever. E.g.:
x(3) = sym('d')
It's just a thought, there might not be a way around it. Basically we're trying to get away from this, though it is terribly convenient (and sometimes necessary) with symbolic variables.

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